NDLI: Full-Duplex Spectrum Sensing Scheme Based on Phase Difference

Content Provider	IEEE Xplore Digital Library
Author	Jian Yang Ying Zhu Ahmad, I. Mingfei Gao Yifan Zhang Zhiyong Feng Yuchi Zhang
Copyright Year	2014
Description	Author affiliation: Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China (Jian Yang; Ying Zhu; Ahmad, I.; Mingfei Gao; Yifan Zhang; Zhiyong Feng; Yuchi Zhang)
Abstract	With recent breakthroughs in full-duplex radio, there is a growing trend to combine it with cognitive radio. Thus the topic of spectrum sensing in full-duplex scenario is addressed in this paper. Firstly, the concept of full-duplex spectrum sensing and its advantage over traditional half-duplex spectrum sensing are analyzed. Then a correlation based least square algorithm is formulated to cancel out self-interference, in which no preamble is required. We notice that the phase distribution of noise differs greatly from that of noise-perturbed signals. Therefore, a novel spectrum sensing scheme using phase difference as test statistics is introduced. Its theoretical performance is also analyzed by approximating the test statistics as Gaussian distribution. The proposed detector is simple and immune to noise uncertainty due to the independence of its threshold on noise power. Simulation results show that robust sensing performance can be achieved in full-duplex scenario using correlation based least square and the phase based sensing scheme.
Starting Page	1
Ending Page	5
File Size	266152
Page Count	5
File Format	PDF
ISBN	9781479944491
DOI	10.1109/VTCFall.2014.6965991
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-09-14
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Sensors Channel estimation Gaussian noise Signal to noise ratio Interference Correlation
Content Type	Text
Resource Type	Article

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